Updated: A violent storm formed west of Oklahoma City late Friday afternoon and produced several tornadoes that left at least eighteen people dead, officials said. A Weather Channel employee is among the injured.

Antonia Candelaria’s funeral was the first of 24, who died in Monday’s monster storm. The seven children, who lost their life at Plaza Towers Elementary School in Moore, Okla., were all in the same third grade class.

The Plains and Midwest were hit hard by a strong storm that included a mile-wide tornado in Oklahoma that damaged roofs and structures on Sunday. UPDATE: Authorities say a tornado that severely damaged a mobile home park southeast of Oklahoma City killed a 79-year-old man and injured at least six people who lived in the mobile home park.